* {
  margin: 0;
  padding: 0;
  list-style: none;
  -moz-box-sizing: border-box; /*Firefox3.5+*/

  -webkit-box-sizing: border-box; /*Safari3.2+*/

  -o-box-sizing: border-box; /*Opera9.6*/

  -ms-box-sizing: border-box; /*IE8*/
}
a {
  color: black;
  cursor: pointer;
}
body {
  height: 100%;
  width: 100%;
  background-image: url("../image/266deadb80a570d93a0ad58cdfe1fd61.jpeg");
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
}
.main_div {
  width: 600px;
  height: 400px;
  position: absolute;
  left: 50%;
  top: 50%;
  background-color: #f0f0f0;
  border-bottom: 2px solid #ffffff;
  transform: translate(-50%, -50%);
  border-radius: 10px;
}
.title {
  width: 100%;
  height: 16%;
  text-align: center;
  line-height: 3;
  font-size: 26px;
  font-weight: bold;
}
.input_text_div {
  position: relative;
  display: flex;
  width: 100%;
  height: 10%;
  margin: 0 auto;
  margin-top: 20px;
  padding-left: 90px;
}
.input_text_div i {
  position: absolute;
  display: inline-block;
  width: 40px;
  height: 100%;
  left: 100px;
  top: 4px;
}
.input_text_div input {
  width: 80%;
  height: 100%;
  outline-style: none;
  border: 0;
  border: 1px solid #e2e2e2;
  border-radius: 20px;
  font-size: 18px;
  text-indent: 3em;
  border-bottom: 1px solid #bdbdbd;
}
.username {
  background-image: url(../image/账号.png);
  background-size: 30px 30px;
  background-repeat: no-repeat;
  background-position: 2px 2px;
}
.userpassword {
  background-image: url(../image/密码.png);
  background-size: 30px 30px;
  background-repeat: no-repeat;
  background-position: 2px 2px;
}
.code_div {
  position: relative;
  display: flex;
  width: 100%;
  height: 10%;
  margin-top: 20px;
  padding-left: 90px;
}
.code_div i {
  position: absolute;
  display: inline-block;
  width: 40px;
  height: 100%;
  left: 100px;
  top: 4px;
}
.code {
  background-image: url(../image/验证码.png);
  background-size: 30px 30px;
  background-repeat: no-repeat;
  background-position: 2px 2px;
}
.code_div input {
  width: 60%;
  height: 100%;
  outline-style: none;
  border: 0;
  border: 1px solid #e2e2e2;
  border-radius: 20px;
  font-size: 18px;
  text-indent: 3em;
  border-bottom: 1px solid #bdbdbd;
}
.codeA {
  width: 80px;
  margin-left: 13px;
  border-radius: 5px;
  border-bottom: 1px solid #bdbdbd;
  line-height: 40px;
  font-size: 13px;
  text-align: center;
  background-color: #ffffff;
}
.codeA:hover {
  background-color: #e2e2e2;
}
.isNot {
  background-color: #c5c5c5;
}
.isNot :hover {
  background-color: #c5c5c5;
}
.butten_div {
  width: 100%;
  height: 20%;
  margin-top: 40px;
}
.butten_div > a {
  display: block;
  margin-top: 12px;
  width: 300px;
  height: 40px;
  margin: 0 auto;
  font-size: 20px;
  line-height: 40px;
  text-align: center;
  border: 1px solid #e2e2e2;
  border-radius: 20px;
  border-bottom: 1px solid #bdbdbd;
  background-color: #ffffff;
}
.butten_div > a:hover {
  background-color: #e2e2e2;
}
.butten_div i {
  display: block;
  width: 190px;
  margin: 5px auto;
  cursor: default;
  color: #919191;
}
.butten_div i a {
  color: deepskyblue;
}
